!!GENETIC_CODE 1.0
transl_table = 5
  This file contains the Invertebrate Mitochondrial Code specified in
the feature table definition, Version 1.08, formatted for use with the
GCG programs (Data Files volume of the Data Reference Set). It names
amino acids in both one and three-letter form and lists the codons
which should translate into them.  All GCG translation programs may
generate their translations from the unambiguous codons in this table.
    Codons which are all lower case are start codons. 

Alternative Initiation Codons:

AUA, AUU
AUC: Apis (Crozier and Crozier, 1993)
GUG: Polyplacophora (Boore and Brown, 1994)
UUG: Ascaris, Caenorhabditis

Systematic Range:

Nematoda: Ascaris, Caenorhabditis;
Mollusca: Bivalvia (Hoffmann et al., 1992); Polyplacophora (Boore and Brown,
1994)
Arthropoda/Crustacea: Artemia (Batuecas et al., 1988);
Arthropoda/Insecta: Drosophila [Locusta migratoria (migratory locust), Apis
mellifera (honeybee)]

Comments:

* The codon AGG is absent in Drosophila.

* GUG may possibly function as an initiator in Drosophila (Clary and
Wolstenholme, 1985; Gadaleta et al., 1988). AUU is not used as an
initiator in Mytilus (Hoffmann et al., 1992).

* "An exceptional mechanism must operate for initiation of translation
of the cytochrome oxidase subunit I mRNA in both D. melanogaster (de
Bruijn, 1983) and D. yakuba (Clary and Wolstenholme 1983), since its
only plausible initiation codon, AUA, is out of frame with the rest of
the gene. Initiation appears to require the "reading" of of an AUAA
quadruplet, which would be equivalent to initiation at AUA followed
immediately by a specific ribosomal frameshift. Another possible
mechanism . . . is that the mRNA is "edited" to bring the AUA initiation
into frame."
     (Fox, 1987)

		Differences from the Standard Code:

			Code 5          Standard

		 AGA    Ser  S          Arg  R
		 AGG    Ser  S          Arg  R
		 AUA    Met  M          Ile  I
		 UGA    Trp  W          Ter  *

                 The Invertebrate Mitochondrial Code

Symbol   3-letter    Codons                     ! IUPAC     ..

 A        Ala         GCT GCC GCA GCG           ! GCX
 B        Asx                                   ! RAY 
 C        Cys         TGT TGC                   ! TGY
 D        Asp         GAT GAC                   ! GAY
 E        Glu         GAA GAG                   ! GAR
 F        Phe         TTT TTC                   ! TTY
 G        Gly         GGT GGC GGA GGG           ! GGX
 H        His         CAT CAC                   ! CAY
 I        Ile         att atc                   ! ATH
 J        ???         ...                       ! ...
 K        Lys         AAA AAG                   ! AAR
 L        Leu         TTA ttg CTT CTC CTA CTG   ! TTR CTX YTR   
 M        Met         atg ata                   ! ATR
 N        Asn         AAT AAC                   ! AAY
 O        ???         ...                       ! ...
 P        Pro         CCT CCC CCA CCG           ! CCX
 Q        Gln         CAA CAG                   ! CAR
 R        Arg         CGT CGC CGA CGG           ! CGX     
 S        Ser         TCT TCC TCA TCG AGT AGC AGA AGG   ! TCX AGX
 T        Thr         ACT ACC ACA ACG           ! ACX
 U        ???         ...                       ! ...
 V        Val         GTT GTC GTA gtg           ! GTX
 W        Trp         TGG TGA                   ! TGR
 X        Xxx                                   ! XXX
 Y        Tyr         TAT TAC                   ! TAY
 Z        Glx                                   ! SAR
 .        ...         ...                       ! ...
 *        End         TAA TAG                   ! TAR